diff --git a/extra/firefox/PKGBUILD b/extra/firefox/PKGBUILD
index 20d9797d4..7647b97e9 100644
--- a/extra/firefox/PKGBUILD
+++ b/extra/firefox/PKGBUILD
@@ -10,7 +10,7 @@
 highmem=1
 
 pkgname=firefox
-pkgver=101.0.1
+pkgver=102.0
 pkgrel=1
 pkgdesc="Standalone web browser from mozilla.org"
 arch=(x86_64)
@@ -28,10 +28,12 @@ optdepends=('networkmanager: Location detection via available WiFi networks'
             'xdg-desktop-portal: Screensharing with Wayland')
 options=(!emptydirs !makeflags !strip !lto !debug)
 source=(https://archive.mozilla.org/pub/firefox/releases/$pkgver/source/firefox-$pkgver.source.tar.xz{,.asc}
+        zstandard-0.18.0.diff
         build-arm-libopus.patch
         $pkgname.desktop identity-icons-brand.svg)
-sha256sums=('b4c76e8bdf81f473f3e56b2f69dbe5119bba5cab38e36ab0f3f38cf0cdc4a9c2'
+sha256sums=('01797f04bd8d65f4c7f628d7ce832bf52a0874433886e4d0d78ef33c1ca66abf'
             'SKIP'
+            'a6857ad2f2e2091c6c4fdcde21a59fbeb0138914c0e126df64b50a5af5ff63be'
             '2d4d91f7e35d0860225084e37ec320ca6cae669f6c9c8fe7735cdbd542e3a7c9'
             '298eae9de76ec53182f38d5c549d0379569916eebf62149f9d7f4a7edef36abf'
             'a9b8b4a0a1f4a7b4af77d5fc70c2686d624038909263c795ecc81e0aec7711e9')
@@ -54,6 +56,9 @@ prepare() {
   mkdir mozbuild
   cd firefox-$pkgver
 
+  # Unbreak build with python-zstandard 0.18.0
+  patch -Np1 -i ../zstandard-0.18.0.diff
+
   echo -n "$_google_api_key" >google-api-key
   echo -n "$_mozilla_api_key" >mozilla-api-key
 
diff --git a/extra/firefox/zstandard-0.18.0.diff b/extra/firefox/zstandard-0.18.0.diff
new file mode 100644
index 000000000..5dfa30557
--- /dev/null
+++ b/extra/firefox/zstandard-0.18.0.diff
@@ -0,0 +1,10 @@
+diff --git i/python/sites/mach.txt w/python/sites/mach.txt
+index 01f4f8c23da3b..85cfaf2b273ac 100644
+--- i/python/sites/mach.txt
++++ w/python/sites/mach.txt
+@@ -134,4 +134,4 @@ pypi-optional:glean-sdk==50.1.0:telemetry will not be collected
+ # We aren't (yet) able to pin packages in automation, so we have to
+ # support down to the oldest locally-installed version (5.4.2).
+ pypi-optional:psutil>=5.4.2,<=5.8.0:telemetry will be missing some data
+-pypi-optional:zstandard>=0.11.1,<=0.17.0:zstd archives will not be possible to extract
++pypi-optional:zstandard>=0.11.1,<=0.18.0:zstd archives will not be possible to extract